Thomas Jermyn (March 1604 – 11 November 1659) was an English courtier and politician who sat in the House of Commons for various seats between 1625 and 1644.

[3] In 1624, Jermyn was elected Member of Parliament for Bere Alston under the patronage of Lord Mountjoy.

He was subsequently elected MP for Lancaster in 1626 and for Clitheroe in 1628, sitting until 1629 when King Charles I decided to dissolve parliament.

This included accidentally revealing the confidential views of the king’s immediate circle while criticising Dudley Digges, who was leading the attempts to impeach Buckingham.

[1] As the civil approached in 1642, Jermyn sided with King Charles and in September 1643 the Roundheads officially discharged him from parliament.